docs: def load_text_file(self, filename, encoding="utf-8", tokenizer=None):
          """ Load in a text file from which to generate a word frequency list
  
              Args:
                  filename (str): The filepath to the text file to be loaded
                  encoding (str): The encoding of the text file
                  tokenizer (function): The function to use to tokenize a string
          """
          with load_file(filename, encoding=encoding) as data:
              self.load_text(data, tokenizer)